This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
| n | a(n) |
|---|---|
| 1 | 13 |
| 2 | 127 |
| 3 | 457 |
| 4 | 1429 |
| 5 | 1553 |
| 6 | 1621 |
| 7 | 2273 |
| 8 | 2341 |
| 9 | 2837 |
| 10 | 4129 |
| 11 | 4231 |
| 12 | 4561 |
| 13 | 4813 |
| 14 | 5119 |
| 15 | 5519 |
| 16 | 5531 |
| 17 | 6121 |
| 18 | 6451 |
| 19 | 6547 |
| 20 | 8161 |
| 21 | 8167 |
| 22 | 8219 |
| 23 | 8237 |
| 24 | 8783 |
| 25 | 8819 |
| 26 | 8831 |
| 27 | 8941 |
| 28 | 9511 |
| 29 | 10267 |
| 30 | 10559 |
| 31 | 11299 |
| 32 | 11383 |
| 33 | 12809 |
| 34 | 13183 |
| 35 | 15091 |
| 36 | 15569 |
| 37 | 16573 |
| 38 | 17569 |
| 39 | 17659 |
| 40 | 18133 |